Soil cadmium retention isotherms and simulation research
Zhang Zeng · 2000
The ability of cadmium retention in the test soils are as follows:calcareous soil sand soilacid soil.The yellow brown soil is much bigger than that of yellow soil.In the range of concentration of experiment,the optimal model of cadmium retention in the soils is Henry model.The result of the experiments express that the processes of cadmium retention of yellow soil is exothermic,and of yellow brown soil has little heating effect,and of the other soils are endothermic reactions.The soil pH and clay content have significant effects on cadmium retention reaction,and the soil pH is the dominant factor of the three kinds of soils influencing the soil cadmium retention ability.